Where, by the way, I offer, whether galls (ſuppoſing all aſtringents work by twiſting and curling, as before I ſhewed) do not twiſt the aculeate particles of diſſolved copperas, making of themſelves no colour, into numerous cones, and thereby produce a black colour; the propriety of cones, and pyramids, and other acuminate bodies, being to return none of the light they receive, which is the ſame, as to cauſe inconſpicuity or blackneſs.
Source: wiktionary
The cataract of the anterior capſula. […] It is known by viewing the pupil; behind which, after the cataract is depreſſed, the anterior lamina of the capſula remains obſcured; likewiſe by the opaque appearance behind the pupil, and inconſpicuity of the couching inſtrument behind the pupil.
Source: wiktionary
Slipping the rope from the jenny, he handed her off to his fellow in blackguardly deals, and with remarkable inconspicuity put on the halter and dug in his heels.
Source: wiktionary